Improvement in steam boilers or generators



NITED STATES;

PATENT FFICE.

AUSTIN lV. SHARP AND WILLIAM F. HORTON, OF VHONEOYE FALLS, NEW

1 YYORK.

IMPROVEMENT IN STEAM BOILERS OR GENERTORS.

Specification forming part of Letters Patent No. 2,871, dated December 5, 1842.

To all whom it may concern:

Be it known that we, AUSTIN W. SHARP and WILLIAM F. HoRToN, of Honeoye Falls, in the town of Meudon, in the county of Monroe and State of New York, have invented a new and Improved Mode of Constructing Steam-Boilers; and we do hereby declare that the Afollowing is a full and exact description.

The nature of our invention consists in'so constructing the boiler that the entire tirechamber and ash-pit are surrounded with water (excepting an opening `for the door and for the smoke-pipe and another small one'in the end of the ash-pit) and in placing tubes within the lire-chamber of the former and in the manner hereinafter described.

To enable others skilled in the art to make and use our invention, we will proceed to de scribe its construction and operation.

We construct the boiler of tin-plate, sheetcopper, boiler-iron, or anyV other metal best adapted to the use to which the boiler is to be applied. lVe prefer tin-plate or copper for domestic manufacturing and allother purposes where there will be but little pressure on the boiler, and boiler-iron of proper thickness where it is to be used for propelling cars, boats, or overcoming other resistances. The fire-chamber is of an oval form, the vertical diameter being a little 'greater than the horizontal. The length of the nre-chamber should be greater than its vertical diameter and placed horizontally. The lire-chamber, with the tubes within it, is represented at A, Fig. Y

2, both the front heads being ed.

The inner plate of the boiler (see B B B, Figures 2 and 3) is of a cylindrical or oval shape, and constitutes the extreme limits of the firechamberon the top, sides, and bottom, excepting that at the bottom this plate drops down a few inches, so as to form an ash-pit of sufiicient depth and width, (letter G, Fig. 2,) which extends back the whole length of the lire-chamber. length as the plate B B, on which at each end of the fire-chamber is fastened (by soldering, if of tin or copper) a head-plate, through which are holes corresponding in shape and number to the ends of the tubes hereinafter described. v

E E, Fig. 2, represent the inner front head.

The fire-chamber is of the sameV `The inner back head exactly corresponds to are surrounded or incased by an outer plateor cylinder, with heads parallel to the first, and made so much larger as to have between them the'requisite water-space extending entirely around the sides and both ends of the fire-chamber and ash-pit, with the exception .of the openings F* F, Fig. 3, corresponding to the openings F* F, Fig. 3, and also of an opening for the smoke-pipe, as seen at HH, Figs. y

1 and 2. The end of the space between the two plates is seen at I, Fig. 2. Across the top of the ash-pit are placed short tubes, communicating at each end with the water-space between the cylinders, and constitute the {iregrate. The ends of these tubes `maybe seen at vK, Fig. 2,'which shows the `ash-pit with the outer plate removed from it.

Around the interior 'of the lire-chamber is arranged a series of tubes at any convenient distance from and parallel to the inner plate, so as to leave a suicient space between the ...tubes andplate for the tire to circulate on. This space and the spaces between the several tubes must be varied according to the size and use of the boiler and the kind of fuel to 4 be employed.

In a boiler of tin-plate with a nre-chamber sixteen inches long and twelve wide and fourteen high, with tubes one inch in diameter, and dry wood fuel, the tubes should be one inch from the plate and about the same distance from each other. Each end of these tubes communicates with the water-spaces in both ends. In the upper part of the fire- -chamber and under the above mentioned tubes and parallel to them is arranged an additional number of tubes at about the same distances from each other and communicating in like manner at each end with the water-spaces in the ends. The first row of tubes is shownY at L L,Fig. 2, and the, additional tubes atM M M, Fig. 2. AtlettersljfMFig. 2, one end of these several tubes is seen as they enter through the inner of the front Water-space, the outer head being ed. These tubes maybe of any convenient size orshape. There great strength is required theiormo the cylinder is preferable; but Where strength;l L

is not important one row of oval or Gothic tubes, the greater. diameter of. which is.I from. three to four inches and they smallerdiameter' or thickness from one-half an inch to an inch, may be advantageously substituted for all the cylinders in the upperl half of the-tire@A chamber. rlhe form` and arrangement are represented at L M, Fig. 2.

Through the upper part of theouterf cylirr-= drical plate or case is anopening, `asshowfnf4 at N,.Fig; 2, through which the: water-space in the boiler is connected with-.the water im the waterand steam chamber,whichv is: represented at O, Fig. 1, inits.placebnthis-aouten cylinder. Neaixthe Y bottom vof chamber 0.,. Fig. l, is placed a commonbracefcock', asfseen'e at P, Fig. l, to ascertain When the Water: is getting too low,` which is always the,casewhenv nothing but steam will passthroughiit'. Near: the bottom of chamber. O is inserted'iastubez. which, turning. ata right angle;entends-up.r along.v the side about twothircis:ot-vv the distance tothe top.

Q, Fig. l, representsthetubethrough: whiclr the boiler and reservoir are-tillediwitlr. Water as high as the top of tlietube, thepaeezabove' being left for steam. The top.A ofv this. tube;- must beproperly stopped when tflie boiler. is.

used.v A Woodencork or plugis-:suicientlfou common purposes.

In the top of the chamber@ isa-inserteda'l short tube, as shown atR, .1, onwhichmr. in which is a screw, by means otwhichf. the.

' tube S S, same figure, isfastened toit. 'llhsk pipe is used to convey'thefsteamtor-whatever is tobe heated. The various: partsf composing this boiler, as `above'described,shouldlbe: riveted together when consisting.' of! boiler.; iron; butwhen consistingiof tinf'plateforcops portion of the various parts and of the whole, while itsV essential principles, as above described, remain unchanged. When rmade from one to two feet long, and of tin or copper plate, one of our boilers is rendered portable by being placed on a frame, as seen atT T, Fig. l.

Il, Fig. l, represents projections soldered onto the boiler. Over these projections a strip of. tin, is nailed or` screwed, by which means the boileris secured in its place on the fra-me.

In the bottom of the ash-pit is inserted a stop-cock; by'means of Which'thewater in the 'boiler may be drawn off. It is represented at vrV, Fig. 1. f

Inv ourfboiler'wood er'ah'coall may. bel usedi for fuel withequal advantage..

Accordin'gltof the best information, knowledgeg. andiV belie ot your petitioners,` their fboil'er: possesses the following advantagesA oven any other invented or in use: First, it jexposesa greateramount ot. surface to the v@direct and-.most advantageousaction: of the iire; seeond,.it combines`.g1eatf strength and durability with simplicity *and cheapness-ot construc'tion.; third, boilers constructed on the: above: principlesmaybe so 4varied in size, fonmmaterials5and` mode of being put to- {getherl-as. tor be advantageously used in als i most every casein the arts inw1hieh1itl is de- I sired4 toheat-water: or liquidsV ofany kind, or

to-generate. steamfor theI purpose: ot' propel.-A`

f ling engines. lt. alsofalloWs-.ot aperfect cirg culation:othewaterrowiugfto the water-space f under: the ash-pit.V A Whatiweiclaimasiourinvention, anddesir.e v tofsecurerbyfLettersPatent, is--` .'Fhecombination andarrangemenn-as here; l in senforth, of: the'. several parts, constructed substantially-in the-mannerandupon-theprine iciplesabovefdescrihedthat is to say, or" the boiler constructed of double plates and.V double v,headsfparallellto eachother, so. that thefire .chamberl and. ashpit are surrounded with:

Wateigfincombination ivith the-hollow- ,@,vrate bars and tubes, arranged-as set forth.

AUSTIN W. SHARP. WILLIAM F. HORTON. Witnessesz..

EDWARD S'. PALMER.,

. CHARLES PA'ULK. 

